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- /*
- * Copyright (c) 2010, Oracle and/or its affiliates. All rights reserved.
- * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
- *
- * This code is free software; you can redistribute it and/or modify it
- * under the terms of the GNU General Public License version 2 only, as
- * published by the Free Software Foundation.
- *
- * This code is distributed in the hope that it will be useful, but WITHOUT
- * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
- * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
- * version 2 for more details (a copy is included in the LICENSE file that
- * accompanied this code).
- *
- * You should have received a copy of the GNU General Public License version
- * 2 along with this work; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
- *
- * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
- * or visit www.oracle.com if you need additional information or have any
- * questions.
- *
- */
-
- package com.github.dcevm.test.eval;
-
- import com.github.dcevm.HotSwapTool;
- import org.junit.Before;
- import org.junit.Test;
-
- import java.util.ArrayList;
- import java.util.List;
-
- import static com.github.dcevm.test.util.HotSwapTestHelper.__toVersion__;
- import static com.github.dcevm.test.util.HotSwapTestHelper.__version__;
-
- /**
- * @author Thomas Wuerthinger
- */
- public class FractionTest {
-
- @Before
- public void setUp() throws Exception {
- __toVersion__(0);
- assert __version__() == 0;
- }
-
- // Version 0
- public static class NoChange {
-
- int i1;
- int i2;
- int i3;
- Object o1;
- Object o2;
- Object o3;
- }
-
- public static class Change {
-
- int i1;
- int i2;
- int i3;
- Object o1;
- Object o2;
- Object o3;
- }
-
- // Version 1
- public static class Change___1 {
-
- int i1;
- int i2;
- int i3;
- Object o1;
- Object o2;
- Object o3;
- Object o4;
- }
-
- // Version 2
- public static class Change___2 {
-
- int i1;
- int i2;
- int i3;
- Object o1;
- }
-
- // Version 3
- public static class Change___3 {
-
- int i3;
- int i1;
- int i2;
- Object o3;
- Object o1;
- Object o2;
- }
-
- // Version 3
- public static class Change___4 {
-
- int i1;
- int i2;
- int i3;
- Object o1;
- Object o2;
- Object o3;
- }
-
- // Version 2
- public static class Change___5 {
-
- }
-
- private static List<Long> measurements = new ArrayList<Long>();
- private final int BASE = 10;
- private Object[] objects;
-
- private void clear() {
- objects = null;
- System.gc();
- System.gc();
- __toVersion__(0);
- System.gc();
- System.gc();
-
- }
-
- private void init(int count, int percent) {
- objects = new Object[count];
- int changed = 0;
- int unchanged = 0;
- for (int k = 0; k < count; k++) {
- if ((count / BASE) * percent <= k/* && k >= 200000*/) {
- objects[k] = new NoChange();
- unchanged++;
- } else {
- objects[k] = new Change();
- changed++;
- }
- }
-
- System.gc();
-
- System.out.println(changed + " changed objects allocated");
- }
-
- @Test
- public void testBase() {
-
- assert __version__() == 0;
-
- final int N = 1;
- final int INC = 4;
- final int SIZE = 4000;
-
- int[] benchmarking = new int[]{SIZE};
- int base = BASE;
- int start = 0;
-
- MicroBenchmark[] benchmarks = new MicroBenchmark[]{new GCMicroBenchmark(), new IncreaseMicroBenchmark(), new DecreaseMicroBenchmark(), new ReorderMicroBenchmark(), new NoRealChangeMicroBenchmark(), new BigDecreaseMicroBenchmark()};
-
- clear();
- for (int k = 0; k < N; k++) {
- for (MicroBenchmark m : benchmarks) {
- for (int i : benchmarking) {
- System.out.println(m.getClass().getName() + " with " + i + " objects");
- for (int j = start; j <= base; j += INC) {
- System.out.println(j);
- m.init(i);
- init(i, j);
- m.doit(i, measurements);
- clear();
- }
- }
- }
- }
-
- System.out.println("Results:");
- for (long l : measurements) {
- System.out.println(l);
- }
- measurements.clear();
- }
- }
-
- abstract class MicroBenchmark {
-
- public void init(int count) {
- }
-
- public abstract void doit(int count, List<Long> measurements);
- }
-
- class GCMicroBenchmark extends MicroBenchmark {
-
- @Override
- public void doit(int count, List<Long> measurements) {
- long startTime = System.currentTimeMillis();
- System.gc();
- long curTime = System.currentTimeMillis() - startTime;
- measurements.add(curTime);
- }
- }
-
- class IncreaseMicroBenchmark extends MicroBenchmark {
-
- @Override
- public void doit(int count, List<Long> measurements) {
- HotSwapTool.resetTimings();
- __toVersion__(1);
- measurements.add(HotSwapTool.getTotalTime());
- }
- }
-
- class DecreaseMicroBenchmark extends MicroBenchmark {
-
- @Override
- public void doit(int count, List<Long> measurements) {
- HotSwapTool.resetTimings();
- __toVersion__(2);
- measurements.add(HotSwapTool.getTotalTime());
- }
- }
-
- class ReorderMicroBenchmark extends MicroBenchmark {
-
- @Override
- public void doit(int count, List<Long> measurements) {
- HotSwapTool.resetTimings();
- __toVersion__(3);
- measurements.add(HotSwapTool.getTotalTime());
- }
- }
-
- class NoRealChangeMicroBenchmark extends MicroBenchmark {
-
- @Override
- public void doit(int count, List<Long> measurements) {
- HotSwapTool.resetTimings();
- __toVersion__(4);
- measurements.add(HotSwapTool.getTotalTime());
- }
- }
-
- class BigDecreaseMicroBenchmark extends MicroBenchmark {
-
- @Override
- public void doit(int count, List<Long> measurements) {
- HotSwapTool.resetTimings();
- __toVersion__(5);
- measurements.add(HotSwapTool.getTotalTime());
- }
- }
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